I have been teaching for nearly 20 years and this is the best teaching tape set for Algebra 1/2 that I have ever used. Not only does she teach the material at a comfortable pace, she has an encouraging and pleasant voice. Her mannerisms while teaching demonstrate she knows this material very well but most of all that the students CAN LEARN IT TOO! They feel empowered with this Instructors style and she encourages them through positive affirmations. Another wonderful advantage is the student can replay the teaching with problem demonstrations over and over until the student understands the material!